Colorimeter.



A. M. PARKS.

OOLOBIMETBB. APPLIoATIoN FILED JUNE 1o, 1909.

Patented Dec. 6, 1910.

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To all whom it may concern:

Be it known that I, ALFRED M. PARKS, a citizen of the United States,residing in Philadelphia, Pennsylvania, have invented certainImprovements in Colorimeters, of which the following is a specification.

The object of my invention is to construct an effective and cheapcolorimeter for testing the colors of liquid or granular material, thedensity of liquid material and the viscosity of fluids.

The invention is particularly adapted for use of salesmen so that thesamples of material can be readily carried, and it is also particularlyadapted for mailing purposes, although it will be understood that theinvention can be made in large sizes for use in laboratories.

In the accompanying drawing Figure l, is a perspective view of myimproved colorimeter, Fig. 2, is a sectional elevation; Fig. 3, is asectional view on the line 3-3, Fig. 2; Fig. 4, is a sectional view onthe line 4-4, Fig. 2; Fig. 5, is a perspective view of a lid or coverwhich may be used to inclose the tubes when the device is to be mailed;and Figs. 6 and 7, are sectional views illustrating modifications of theinvention.

A is the case, made preferably of cardboard or thin wood, having sidesa, o; and a closed bottom o. The back c2 of the case is solid. V

Z), o are two transverse partitions extending across the case from oneside to the other and in these partitions are holes o for the tubes D,the holes are preferably round as shown, to fit the tubes, and the tubesare provided with corks (Z. The space above the partitions Z) is closedby a strip c of cardboard or thin wood, and the space below thepartition o is also closed by a piece of cardboard or other material, sothat both ends of the tubes are inclosed and only the center portion ofthe tubes exposed to view.

F is a cap having a flange f which lits snugly in the case A. Thebottles or tubes D may be of such length that there will be very littlespace between the ends of the cork and the cap, thus preventing theaccidental loosening of the cork, although the cork may be fastened, ifdesired, directly to the tube or bottle by any suitable means.

In Fig. 5, I have shown a Hanged cover A which may be applied to theface of the box A so as to inclose the tubes and protect Specificationof Letters Patent.

Application led June 10, 1909.

Patented Dec. 6, 1910.

Serial No. 501,358.

them when it is desired to mail the device, or when carried in thepocket.

In Fig. 6, I have shown a partition with square holes to accommodate thebottles or tubes, and in Fig. 7, I have shown the box open at bothfrontand back, having both a removable cover A and a removable back A2,so that when it is desired to dispense with the back it can be readilydetached. The exposed space between the sides and the transversepartitions is preferably of a contrasting color with the material in thetubes, in the case of oils, for instance, I preferably make thebackground a pure white, so that the different shades of color can bereadily distinguished. In the construction shown in Fig. 7, forinstance, the back A2 is made of one color and the inner portion of thecover A made of another color, so that either one can be used, asdesired. It will be understood that these covers may be hinged insteadof being entirely detachable, as shown, and that the number of bott-lesmay be increased or diminished without departing from the essentialfeatures of the invention.

It will be seen by the above construction that I am able to provide avery practical and cheap colorimeter, which can be carried in the pocketor mailed to customers without liability of the tubes being broken andin which the test as to color and viscosity can be readily made.

I claim l. The combination in a colorimeter, of a box having twotransverse partitions spaced apart, said partitions being perforated,and a single series of tubes extending through the perforations in thepartition, the center portion of the tubes being exposed and the back ofthe box being of a contrasting color with the material in the tubes.

2. The combination in a colorimeter, of a box having a back and twotransverse perforated partitions spaced apart, the space above and belowthe said partitions being closed, leaving the central portion of thetubes exposed, and the portion of the back between the partitions andback of the tubes being of a contrasting color with the material in thetubes. .f

8. The combination in a colorimeter, of a box having sides and a solidback, two transverse partitions spaced apart and perforated for thereception of tubes, the upper and lower portions of the box, beyond thepartitions, being Closed, a removable lid at one end of the box for theremoval of the tubes, and a cover adapted to inelose the portion of thebox between the partitions,

4the body of the box back of the tubes being of a contrasting Color withthe material in the tubes.

4. The combination in a colorinieter7 of a box having transversepartitions perforated for the reception of tubes, the space above andbelow the said partitions being closed,

with a removable back and Cover for the space between the partitions,the inner surface of tlie back and cover being of a contrastiiig colorWith the material in the tubes. In testimony whereof, I have signed myname to this specification, in the presence of tWo subscribingWitnesses.

ALFRED M. Witnesses:

WM. E. SHUPE, WM. A. BARR.

PARKS

